From: hrubin@stat.purdue.edu   
      
   In article <6f7gf.1658$8o6.827@trndny03>, Nog  wrote:   
   >If comets are made from mostly water-ice, some dirt and organic matter they   
   >had to come from a former water planet that blew up somewhere in the   
   >universe.   
      
   Not necessarily.  In the dust cloud around a forming star,   
   there would be lots of water molecules, ammonia molecules,   
   "dirt" molecules, and a fair number of organic molecules.   
   Cold temperatures would cause things to be mostly in the   
   form of ice, but even then, there would be enough energy   
   for higher organic molecules than methane and benzene to   
   form, given enough time.   
      
   >The planet apparently had water and life before it's demise. This seems to   
   >be the natural way the universe seeds it's livable planets and spreads it's   
   >life. There must be lots of Ort clouds and Keifer belts in other solar   
   >systems and other galaxies.   
      
   As I said before, this does not have to come from the   
   decomposition of a planet.  There probably are a lot of   
   Oort clouds and Kuiper belts, especially about stars   
   which are not part of a multiple system.   
      
   --   
   This address is for information only.  I do not claim that these views   
   are those of the Statistics Department or of Purdue University.   
   Herman Rubin, Department of Statistics, Purdue University   
   hrubin@stat.purdue.edu         Phone: (765)494-6054   FAX: (765)494-0558   
      
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